The numbers are different from those continuously available at seattlepi.com. Gartner Research’s quarterly mobile-OS stats represent new phone sales — today’s comScore report is based on surveys of existing smart-phone customers.

Microsoft is on the verge of releasing its new mobile OS, Windows Phone 7, which the company hopes will reinvigorate its smart-phone business. Microsoft’s mobile share has steadily fallen for three years, since Windows Mobile was a leading platform.